How many associates are needed to make the sandwiches

Question

It takes 5 associates to make 60 sandwiches in 10 hours. How many associates will it take to make 75 sandwiches in 10 hours?

Answer 1

a represents the number of associates

5 : 60 :: a : 75        proportion

60a = 5(75)            product meas/extremes

 

Can you solve for a? (Good luck finding this kind of associate!?